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 half circle fitting

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T O P I C    R E V I E W
mhhoang209 Posted - 11/07/2017 : 11:36:01 AM
Origin Ver. and Service Release (Select Help-->About Origin): 9.0
Operating System: windows 10

Dear friends,
After some measurements i got some data and have this plot.
Now I need to extrapolate to the x-axis, and find 2 values of x.
Thank you so much and sorry for my bad English.
1   L A T E S T    R E P L I E S    (Newest First)
arstern Posted - 11/07/2017 : 12:40:39 PM
Hi,

Please see if the documentation on interpolate/extrapolate helps:
http://www.originlab.com/doc/Tutorials/Interpolate-Gadget
http://www.originlab.com/doc/Origin-Help/Math-Inter-Extrapolate

Another method, you might want to do is create a fitted curve of your data and then find X from the fitted curve.

Select data -> Select Analysis -> Fitting -> Nonlinear Implicit Curve Fit
http://www.originlab.com/doc/Origin-Help/Fitting-Implicit

Within the Nonlinear Fit dialog -> Under Find X/Y -> select Find X from Y:
http://www.originlab.com/doc/Quick-Help/FindXfromY-FindYfromX

Thanks
Aviel
OriginLab

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